EXT JS, JQTouch and Raphael are three Javascript frameworks that are now bundled together into an awesome library for mobile app development. This story also features a brief conversation on the licenses of each.

Jared Case of Relevance has published an awesome pdf generation library for Ruby that uses WebKit as the engine to render HTML + CSS3 to pdf files. If you've ever had to use a pdf library that made you feel like you were trying to tell someone how to draw things on graph paper over the phone, this library will seem like a dream come true.

At his RailsConf keynote, DHH showed a potential new feature in Rails 3.1 that the audience responded favoraby to - automatic generation of CSS sprites to reduce network requests. With this gem, you can get that ability today - AND it works with Sinatra (as well as merb for you holdouts).

GStore is a ruby gem for interacting with Google's Storage API. This promising young gem is usable today with GStore, and is under active development for some of the more 'advanced' features that the storage API is offering (when it comes out of private review).

In this blog post, Charles Nutter describes the hoops they had to jump through to instill JRuby with awesomeness, and the changes they'd like to see to make things work even better (some of which are already happening).

If you spend time as a rubyist, you really should give JRuby a spin - and with RVM it is easier than ever.

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This Ruby5 was co-produced and edited by Audio Guru Jacob Woods. If you have audio which needs polishing or editing.. please send him an email.